On Sony Readers

If you are attempting to download ADE epub or pdf files to a Sony Reader device and are receiving an Error -1145 please set your file associations to cause ADE files to download to your ADE 1.7 and not the Sony Library software.
 

Please verify your computers file associations are set to open the .acsm (the pre-install extension of ADE ebooks sourced from ACS4 servers) and .epub extensions in your ADE 1.7 software. To do this:
 

For Windows XP and earlier •Open Windows Explorer
 

•Click TOOLS
•Click FOLDER OPTIONS
•Click the FILE TYPES tab
•Scroll down to the .acsm extension and highlight it In box under "details for acsm extension," change the Opens With assignation to Adobe Digital Editions.
•Repeat for EPUB extensions if necessary.
 

For Windows Vista 

•Open the Control Panel (Click START - CONTROL PANEL); please DO NOT use Classic view.
•Click PROGRAM
•Click DEFAULT PROGRAMS
•Click "Make a File Type Always Open in a Specific Program".
•Scroll down to the acsm extension and highlight it.
•Click CHANGE PROGRAM and select Adobe Digital Editions.
•Repeat for EPUB extensions
 

For Macintosh Operating Systems:

•'Control-click' the 'acsm' file and select 'Open With'.
•Select 'Other...'
•In the list of programs displayed, select Adobe Digital Editions.
•Check the 'Always Open With' box so that the .acsm file type will always open in
•Adobe Digital Editions.
•Repeat for EPUB extensions
This file "association" will cause downloads to default to Adobe Digital Editions.